Home / 90,203.13-124,398.08-77,452.32

Finding the Fourth Proportional to 90,203.13, 124,398.08 and 77,452.32

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Solution

The fourth proportional to 90,203.13, 124,398.08 and 77,452.32 is: 106,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.13 : 124,398.08 = 77,452.32 : x
  2. Step 2: Convert to fraction form
    90,203.13/124,398.08 = 77,452.32/x
  3. Step 3: Cross multiply
    90,203.13x = 124,398.08 × 77,452.32
  4. Step 4: Simplify right side
    90,203.13x = 9,634,919,899.55
  5. Step 5: Solve for x
    x = 9,634,919,899.55/90,203.13
  6. Step 6: Final answer
    x = 106,813.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.